Valve for double-acting pumps



UNITED STATES PATENT OFFICE.

JOHN C. KING, OF BELVIDERE, NEW JERSEY.

' VALVE FOR DOUBLE-ACTING PUMPS.

Speccation of Letters Patent No. 15,134, dated June 1'?, 1856.

To all whom t may concern Be it known that I, JOHN O. KING, of Belvidere, in the county of Warren and State of New Jersey, have invented a new and Improved Pump-Valve; and I do hereby declare that the following is a full and eXact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of my invention is a single valve with two chambered angular faces, t0 answer for, and do the work of, the suction and delivery valves in that description of pump that are double-acting or receive and deliver water on both sides o-f the piston.

Figure l in the accompanying drawings is a longitudinal sect-ion of a pumpcylinder and valve chest and valve, and Fig. 2 a side view of the valve detached.

A is the cylinder of a double acting pump with suction and delivery passages made similar to the steam and exhaust passages of a steam cylinder; B, the pump piston; C, suction passage through which the water is brought to the cylinder. It can be around the cylinder and connect with the suction pipe at the lower side of the cylinder or can be carried half-way down on each side so that a suction pipe can be attached to either or both sides as may be desired to suit the location of the pump; D, D, passages through which the water is conveyed to the cylinder, and through which also the water is forced to the valve chest F; E, the valve, with two faces standing at such angles to each other as will permit the ready delivery of the water past, and by, the one face while the other face is covering the suction passage. The faces of the valve are chambered out-similar to the ordinary sliding-steam-valvesufliciently to permit the free ingress of the water to the cylinder. It is supported by arms at each side, which run up a proper height to allow an easy vibration to it, with slotted holes in them, in the direction of their length, to permit the central point of it to move back and forth on the valve seat and the faces of it to sit firmly and tightly when in place. The arms work on a pin or bolt running through from side to side of the valve chest; F, valve chest, to which at any convenient point on the top the air chamber G is attached, and from which, at any other convenient point, the delivery pipe is taken.

The valve is retained firmly on its seat during the period of each stroke of the piston by the pressure of the water in the valve chest and air-chamber upon it, and is shifted from one passage to the other by the pressure of the water seeking egress from the cylinder. l/Vhen the valve is used on an upright or vertical cylinder, its weight is counterbalanced on the pin on which itl works, so that it will vibrate up and down vequally as well as when used on a horizon- ,tal cylinder.

In Fig. l, the pump is represented as taking water through the suction passage B and the chamber in one face of the valve and the cylinder passage D, and delivering it into the valve chest through the passage D past the other face of the valve. On the return stroke of the piston the face of the valve that was on the seat is thrown up ldy the pressure of the water from the cylinder upon it, while the face that was before thrown up is brought down upon the seat, (as represented by the red lines in t-he drawing) and the water is received and delivered from the opposite end of the cylinder in the same manner as described for the other.

What I claim as my invention and desire to secure by Letters Patent isf- A single pump-valve with two chambered faces standing at an angle to each other, and operated by the pressure of the water from the pump-cylinder, to answer as suction and delivery valve to a double-acting pump, substantially as herein set forth.

JOHN C. KING. 

